This style has a full-grain leather foot, collar and pull straps with a faux shaft. It also features a soft mesh lining, the Durango X-Pand System which is a hidden gore expansion for universal fit and easy on/off, the Durango X-Treme Comfort footbed with Memory Foam and a cushion flex insole for all day comfort.This style also features a fiberglass shank which provides lightweight stability and a rolled shank area. The molded EVA midsole is lightweight and flexible, and the outsole is slip and oil-resistant, dual-density and abrasion resistant rubber. This style also features a double row sole stitch, 1 1/2 inch rocker heel and square toe.Calf circumference: 15 inches